diff options
Diffstat (limited to 'gl/alloca.c')
| -rw-r--r-- | gl/alloca.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/gl/alloca.c b/gl/alloca.c index 75afdb9607..771c2faa34 100644 --- a/gl/alloca.c +++ b/gl/alloca.c @@ -94,21 +94,20 @@ static int stack_dir; /* 1 or -1 once known. */ # define STACK_DIR stack_dir static void -find_stack_direction (void) +find_stack_direction (char **ptr) { - static char *addr = NULL; /* Address of first `dummy', once known. */ auto char dummy; /* To get stack address. */ - if (addr == NULL) + if (*ptr == NULL) { /* Initial entry. */ - addr = ADDRESS_FUNCTION (dummy); + *ptr = ADDRESS_FUNCTION (dummy); - find_stack_direction (); /* Recurse once. */ + find_stack_direction (ptr); /* Recurse once. */ } else { /* Second entry. */ - if (ADDRESS_FUNCTION (dummy) > addr) + if (ADDRESS_FUNCTION (dummy) > *ptr) stack_dir = 1; /* Stack grew upward. */ else stack_dir = -1; /* Stack grew downward. */ @@ -155,7 +154,10 @@ alloca (size_t size) # if STACK_DIRECTION == 0 if (STACK_DIR == 0) /* Unknown growth direction. */ - find_stack_direction (); + { + char *addr = NULL; /* Address of first `dummy', once known. */ + find_stack_direction (&addr); + } # endif /* Reclaim garbage, defined as all alloca'd storage that |